[master] Finished merge of trac5145b (hooks and D2 client configs)

ChangeLog

+1222.	[func]		fdupont
+	Obsolete parameter 'allow-client-update' has been removed
+	from DHCPv4 and DHCPv6 components.
+	(Trac #5145, git xxx)
+
 1221.	[func]		tomek
 	Control agent is now able to parse the input configuration and
 	store it in its configuration syntax structure. Upcoming tickets